diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 94705bff9..160e7ea43 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -64,7 +64,7 @@ jobs:
           token: ${{ secrets.GH_TOKEN }}
           ref: migration
       - name: Install yq - portable yaml processor
-        uses: mikefarah/yq@v4.32.2
+        uses: mikefarah/yq@v4.35.2
       - name: Update deployment
         env:
           GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
diff --git a/backend/dev.dockerfile b/backend/dev.dockerfile
index 62750b7ed..8398c90c1 100644
--- a/backend/dev.dockerfile
+++ b/backend/dev.dockerfile
@@ -1,7 +1,7 @@
 
 # Sets up the backend, opening it to reload on change
 # Python image
-FROM python:3.10.5-slim
+FROM python:3.11.5-slim
 
 # install nodemon
 
diff --git a/backend/init-mongo.dockerfile b/backend/init-mongo.dockerfile
index ca908b20e..9f26ec4eb 100644
--- a/backend/init-mongo.dockerfile
+++ b/backend/init-mongo.dockerfile
@@ -2,7 +2,7 @@
 # speeds up development, since we can rebuild and create new containers without
 # overwriting every time.
 
-FROM python:3.10.5
+FROM python:3.11.5
 
 WORKDIR /util
 
diff --git a/backend/production.dockerfile b/backend/production.dockerfile
index c70c23dd7..77b4b602f 100644
--- a/backend/production.dockerfile
+++ b/backend/production.dockerfile
@@ -1,7 +1,7 @@
 # Sets up the backend, without writing data into the database.
 
 # Python image
-FROM python:3.10.5-slim
+FROM python:3.11.5-slim
 
 # gcc required for python-Levenshtein
 RUN apt-get update \
diff --git a/frontend/production.dockerfile b/frontend/production.dockerfile
index 030965864..c6d69604f 100644
--- a/frontend/production.dockerfile
+++ b/frontend/production.dockerfile
@@ -8,7 +8,7 @@ RUN npm ci
 COPY . .
 RUN npm run build
 
-FROM caddy:2.6.2-alpine
+FROM caddy:2.7.4-alpine
 COPY ./Caddyfile /etc/caddy/Caddyfile
 COPY --from=builder /app/build /srv